6.2.5 - Bioimpedance Microsensor for Cell-Density Monitoring in Small-Scale Bioprocessing

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Lectures

Chapter

Biosensors

Author(s)

P. Patschg, Y. Mermoud, R. Achor, S. Huber - OST.Eastern Switzerland University of Applied Sciences,Buchs (SG) (Switzerland), S. Schneider, M. Zumbihl, R. Eibl - ZHAW Zurich University of Applied Sciences,Wädenswil (Switzerland)

Pages

206 - 207

DOI

10.5162/eurosensors2026/6.2.5

ISBN

978-3-910600-12-6

Price

free

Abstract

A U-shaped single-mode–no-core–single-mode (SMF-NC-SMF) optical fibre sensor functionalised with a sequential PEI/PDADMAC/MXene (Ti ₃ C ₂ Tₓ) multilayer interface is presented for the label-free, real-time detection of perfluorooctanoic acid (PFOA) and perfluoro octane sulfonate (PFOS) in aqueous media. Exploiting evanescent wave interactions at the fibre–solution interface, the sensor transduces analyte binding events as measurable wavelength shifts. PFAS contaminants produced clear, concentration-dependent responses spanning 0.1–10⁰ pg/mL, establishing the platform's suitability for sensitive water quality monitoring applications.